part #2

src/__Libraries/StellaOps.Cryptography.Kms/FileKmsClient.Metadata.Helpers.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Immutable;
+using System.Linq;
+
+namespace StellaOps.Cryptography.Kms;
+
+public sealed partial class FileKmsClient
+{
+    private static KmsKeyMetadata ToMetadata(KeyMetadataRecord record)
+    {
+        var versions = record.Versions
+            .Select(v => new KmsKeyVersionMetadata(
+                v.VersionId,
+                v.State,
+                v.CreatedAt,
+                v.DeactivatedAt,
+                v.PublicKey,
+                v.CurveName))
+            .ToImmutableArray();
+
+        var createdAt = record.CreatedAt
+            ?? (versions.Length > 0 ? versions.Min(v => v.CreatedAt) : TimeProvider.System.GetUtcNow());
+        return new KmsKeyMetadata(record.KeyId, record.Algorithm, record.State, createdAt, versions);
+    }
+}